The metallocene compound according to the invention and the olefin polymerization catalyst containing the compound are intended to produce a catalyst capable of preparing an isotactic polymer with a high polymerization activity. The metallocene compound contains a substituted cyclopentadienyl group and a (substituted) fluorenyl group and has a structure wherein these groups are bridged by a hydrocarbon group or the like. The process for preparing a metallocene compound according to the invention is intended to selectively prepare a specific metallocene compound so as not to produce an isomer, and in this process an intermediate product is synthesized by a specific method. The process for preparing a polyolefin according to the invention is intended to prepare a polyolefin having excellent impact resistance and transparency, and this process comprises homopolymerizing an α-olefin of 3 to 8 carbon atoms or copolymerizing an olefin of 3 to 8 carbon atoms and another α-olefin in the presence of an olefin polymerization catalyst containing the above-mentioned metallocene compound.
本发明的
金属茂化合物和含有该化合物的烯烃聚合催化剂旨在生产一种能够制备高聚合活性的等规聚合物的催化剂。该
金属茂化合物含有取代
环戊二烯基基团和(取代)
芴基团,并且具有这些基团由碳氢化合物桥接或类似物桥接的结构。本发明的制备
金属茂化合物的方法旨在有选择地制备特定的
金属茂化合物,以避免产生异构体,在该过程中,通过特定方法合成中间产物。本发明的制备聚烯烃的方法旨在制备具有优异的冲击强度和透明度的聚烯烃,该方法包括在上述含有
金属茂化合物的烯烃聚合催化剂的存在下,同聚合3至8个碳原子的α-烯烃或共聚合3至8个碳原子的烯烃和另一种α-烯烃。